论文部分内容阅读
本文叙述了10英尺直径×10英尺长的石墨-环氧圆柱体的设计和制造,并报导了用试样粘合组件、材料试样和加强环进行研究试验的结果。圆柱壳体是由环加强的、用 T300/5208石墨-环氧带作为壳壁和加强环的基本材料的外露波纹结构。圆柱体将在美国国家航宇局兰利研究中心进行试验,它设计成能承受弯曲负荷,此负荷能产生相对较低的900磅/英寸最大负荷应力。最终壳壁重量,包括加强环和固定件,是0.37磅/英尺~2。这重量是在100英尺长的试验平板上,用能模拟连接环加强件的全尺寸壁结构获得的。石墨-环氧圆柱体的壳重与相似形状的铝壳相比,可望节省重量约23%。它是采用一种独特的制造方法,其圆柱体壁是采用三块扁平瓜瓣组装而成的。由于薄波纹壁的径向柔性,这种途径是可行的,并且已证明是一种简易的途径。本文所叙述的工作是按美国航宇局的合同 NASI-14547进行的。
This article describes the design and manufacture of a graphite-epoxy cylinder 10 feet in diameter x 10 feet long and reports the results of a research trial using sample bonded components, material specimens, and stiffeners. Cylindrical shells are ring-stiffened with T300 / 5208 graphite-epoxy tapes as exposed corrugations of the base material of the shell walls and stiffeners. Cylinders will be tested at the NASA Langley Research Center and designed to withstand bending loads that produce a relatively low maximum load stress of 900 psi. The final shell weight, including the reinforcement ring and retainer, is 0.37 lb / ft2. This weight was obtained on a 100-foot test plate with a full-size wall structure that simulates the attachment of a ring stiffener. The shell weight of graphite-epoxy cylinders is expected to save about 23% of the weight compared to similarly shaped aluminum shells. It uses a unique manufacturing method, the cylinder wall is assembled using three flat melon. This approach is viable due to the radial flexibility of the thin corrugated walls and has proved to be an easy way. The work described in this article was conducted in accordance with NASA’s contract NASI-14547.